AD9253 Replacement: GX9253 Fully Hardware and Software Compatible Quad ADC
GX9253 is a four-channel, 14-bit, 125 MSPS ADC developed as a direct replacement for AD9253. It maintains the same principal channel architecture, 1.8 V supply, differential inputs, serial LVDS outputs, sampling-clock compatibility and 48-pin package configuration.
Existing AD9253 designs can migrate to GX9253 without modifications to the schematic, PCB layout, FPGA LVDS capture logic or existing control software, reducing redesign work and shortening replacement verification.
GX9253 for AD9253 Replacement and New Designs
GX9253 provides a direct migration path for products currently using the 125 MSPS version of AD9253. Pin-to-pin compatibility allows the original PCB and peripheral circuits to remain unchanged, while software compatibility enables existing configuration and control logic to be retained.
For new designs, its four synchronized ADC channels provide a compact solution for applications requiring 14-bit resolution, high channel density and serial data transmission.
Pin-to-Pin Hardware and Software Compatibility with AD9253
GX9253 is hardware compatible with AD9253, including the pinout, 1.8 V supply, differential analog inputs, sampling-clock inputs, serial LVDS outputs, DCO/FCO signals and 48-pin package footprint.
It is also software and control compatible with AD9253-based systems. Existing SPI configuration, FPGA LVDS data-capture logic and system control software can be retained when migrating to GX9253.
This compatibility allows GX9253 to replace AD9253 without changing the original schematic, PCB, FPGA interface or software architecture.
GX9253 vs AD9253: Key Specification Comparison
|
Specification |
AD9253 |
GX9253 |
|
Resolution |
14-bit |
14-bit |
|
Channels |
4 |
4 |
|
Maximum Sampling Rate |
125 MSPS |
125 MSPS |
|
Input Type |
Differential |
Differential |
|
Supply Voltage |
1.8 V |
1.8 V |
|
Data Output |
Serial LVDS |
Serial LVDS |
|
Sampling Clock |
LVPECL / CMOS / LVDS |
LVPECL / CMOS / LVDS |
|
Integrated Sample-and-Hold |
Yes |
Yes |
|
DCO / FCO Outputs |
Yes |
Yes |
|
Individual Channel Power-Down |
Supported |
Supported |
|
All Channels Disabled |
<2 mW typical |
<2.2 mW typical |
|
Package |
48-Lead LFCSP, 7 mm × 7 mm |
QFN48, 7 mm × 7 mm |
|
Pin-to-Pin Hardware Compatible |
— |
Yes |
|
Schematic Modification Required |
— |
No |
|
PCB Redesign Required |
— |
No |
|
FPGA Interface Modification Required |
— |
No |
|
Software Modification Required |
— |
No |
GX9253 retains the resolution, sampling rate, channel count, power supply, serial output and control architecture required by AD9253-based systems.
Key Performance and Applications
GX9253 automatically multiplies the sampling clock to generate the required serial LVDS data rate. It provides a DCO for data capture and an FCO to identify the beginning of each new output byte.
Key GX9253 specifications include:
l Four ADC channels
l 14-bit resolution
l Sampling rate up to 125 MSPS
l Differential analog inputs
l Single 1.8 V supply
l Serial LVDS data outputs
l LVPECL-, CMOS- and LVDS-compatible sampling clocks
l DCO and FCO outputs
l Individual-channel power-down
l QFN48 package, 7 mm × 7 mm
GX9253 is suitable for medical ultrasound, high-speed imaging, quadrature and diversity radio receivers, multichannel data acquisition, communication equipment and test instruments.
Technical Support for Direct Replacement
GXSC can provide samples, compatibility verification, schematic review and technical support to help customers replace AD9253 with GX9253 while retaining the existing PCB, FPGA interface and software architecture.
Request GX9253 Datasheet and Samples
Contact GXSC to request the GX9253 datasheet, samples, quotation or technical support for your AD9253 replacement or new high-speed ADC project.
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